Tiny temperature variations in the CMB are direct evidence of inflation. They correspond to density fluctuations that seeded galaxy formation. Satellites like Planck measure these patterns with extreme precision. Matching theory and observation strengthens the Big Bang and inflation models. Inflation’s “footprint” bridges quantum fluctuations with large-scale cosmic structures. It’s a microscopic origin for macroscopic order.
It matters because detecting inflationary imprints validates early-universe theories.
It also helps predict the distribution of galaxies and cosmic evolution patterns.
Inflation’s fingerprints are visible in the cosmic microwave background.
Planck Collaboration [esa.int]